| Glen Rock to Opwijk | 3,643.25 mi (5,863.24 km) |
| Glen Rock to Ostend | 3,585.65 mi (5,770.54 km) |
| Glen Rock to Oud-Heverlee | 3,666.23 mi (5,900.23 km) |
| Glen Rock to Oud-Turnhout | 3,666.47 mi (5,900.61 km) |
| Glen Rock to Oudenaarde | 3,622.57 mi (5,829.97 km) |
| Glen Rock to Oudenburg | 3,589.95 mi (5,777.47 km) |
| Glen Rock to Oupeye | 3,708.97 mi (5,969.01 km) |
| Glen Rock to Overijse | 3,662.13 mi (5,893.63 km) |
| Glen Rock to Overpelt | 3,686.43 mi (5,932.74 km) |
| Glen Rock to Paal | 3,681.28 mi (5,924.45 km) |
| Glen Rock to Peer | 3,690.11 mi (5,938.65 km) |
| Glen Rock to Pepinster | 3,719.78 mi (5,986.40 km) |
| Glen Rock to Peruwelz | 3,630.34 mi (5,842.47 km) |
| Glen Rock to Perwez | 3,677.69 mi (5,918.68 km) |
| Glen Rock to Philippeville | 3,678.05 mi (5,919.25 km) |
